20025800

素因数分解:

$2^3\times 5^2\times {\mathrm{100129}}^1$

素因数の和:100145

約数の個数: 24

約数和(自身を含む): 46560450

約数和(自身を除く): 26534650

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 100129, 200258, 400516, 500645, 801032, 1001290, 2002580, 2503225, 4005160, 5006450, 10012900, 20025800]

約数ペア:

[(1, 20025800), (2, 10012900), (4, 5006450), (5, 4005160), (8, 2503225), (10, 2002580), (20, 1001290), (25, 801032), (40, 500645), (50, 400516), (100, 200258), (200, 100129)]